Use generated DBus proxies/adaptors

Bug: 22388998
Change-Id: Ia7c26f3e9d9d8c90bce54acc82de0d991d46797b
diff --git a/libwebserv/protocol_handler.cc b/libwebserv/protocol_handler.cc
index 7897c76..e7e8dc8 100644
--- a/libwebserv/protocol_handler.cc
+++ b/libwebserv/protocol_handler.cc
@@ -19,7 +19,7 @@
 #include <base/logging.h>
 #include <chromeos/map_utils.h>
 
-#include "libwebserv/org.chromium.WebServer.RequestHandler.h"
+#include "dbus_bindings/org.chromium.WebServer.RequestHandler.h"
 #include "libwebserv/request.h"
 #include "libwebserv/request_handler_callback.h"
 #include "libwebserv/response.h"